Show:
Substitution
PEMDAS
LCM
GCF
Add & Subtract
100

y + 10                  when y = 3  

13

100

6 + 7 - 4

9

100

The LCM of (4,5)

20
100

GCF of 20 and 5

5

100

155 + 245

400

200

7x ÷ 2             when x = 4

14

200

6(2) -11

1

200

The LCM of (12,8)

24

200

GCF of 72 and 8

8

200

143 + 134

277

300

4 + 3x - 15           when x = 6

7

300

4 + 7 - (2 · 2)

7

300

The LCM of (3,5)

15

300

GCF of 12 and 15

3

300

60 - 31

29

400

9+y(3+2)           y=6

39

400

(25 - 10) ÷ 5 + 7

10

400

The LCM of (8,20)

40

400

GCF of 30 and 40

10

400

42-18

24